Motor



C. DAUB Oct. 5 1926;

MOTOR 1924 2 Sheets-Sheet 1 Filed Nov. 8

LEUEEE L ."LELIRE E lzsuHE E INVENTOR (mar/n55 D005 ATTORNEY Oct. 5 1926. 1,602,068

(3. DAUB I MOTOR Filed Nov. 8, 1924 2 Sheets-Sheet 2 =F1ELJRE 46 m HM ATTORNEY Patented 0a. 5, 1926.

UNITED STA TEs PATENT- OOFF'ICE.

CHARLES Davis, or NEW YORK, N. Y.

MOTOR.

Application filed November 8, 1924. Serial No. 748,749.

to motors, and espewhich one or preferably of considerable length, are caused to undergo 5 contraction and become shortened, and in doing this to produce an expenditure of power.

More particularly stated, I seek to make a motor in which I take advantage of the tendenoy of a rope or its equivalent to contract and thus become shortened whenever it is wet and to become elongated upon dry- Tn some instances I seek to use the thermal expansion and contraction of a metallic wire or other metallic member, preferably of considerable length,

so arranged as to become lengthened by heating and shortened by d t u cooling, an power,

s to exert an expenditure of thus operating the motor.

Reference is made to the accompanying drawing forming a and in'which like reference characters tion,

part of this specificaindicate like parts throughout the several figures.

Figure form of my motor,

1 is a side elevation showing one in which a single rope is wound hack and forth upon a number of pulleys, in such manner that the lengthening and shortening of the rope, due to its becoming wet or dry,

Figure 2 is a plan view of is cumulative.

the mechanism appearing in Figure 1.

Figure 3 is a side elevation showing another form of my device, which differs from the structure shown in having subdlvlsions in order to exert greatv power but develop relatively small velocity or speed.

Figure 4 1s a side elevation showing my device in Figure 3 but with the addition of a drying rack for the rope.

Figure 5 is a-plan view of the mechanism shown in Figure 4.

Figure 6, 1s a side elevation, showing another form of my device similar to the one appearin in Figures'l and 'ception t at-I use a wire,

2, with the exlengthened and shortened by the application and withdrawal of heat, instead of a rope.

10, 11, and supported by these hearings are two shafts 12, 12'.

Carried by the shaft 12 and loose rela Figures 1 and 2 by' the rope so arranged that various thereof pull together as a unit tively thereto are a number of grooved pulleys 13, revoluble independently of each other. The shaft 12 is similarly provided with an equal number of grooved pulleys 14, all loose.

A single rope 15 is secured by one 'of its The rope 15 is made of cotton, hemp, I

tough grass or any other suitable material such as, upon becoming wet, will enable the rope-to contract or to become shortened and which when dried out will cause the rope to increase in' length.

The load 18 may be a building wall to be straightened up or pulled down as the case may be, or it moved, a stranded ship to be dislodged, or in fact any unusually heavy load to be moveda short distance.

The operation of the mechanism shown in Figures 1 and 2 is as follows:

The parts being assembled and arranged as illustrated and described, and the rope 15 being drawn taut at the start and being dry, water is showered freely upon all portions of the rope. The result is that the rope absorbs a portion of the water by eapillarity, and becomes thereby swollen in size and correspondingly shortened. Since the two shafts 12 and 13 always remain the same distance apart, the ortions of the rope extending from the pul eys 13 to the pulleys 14, in contractlng, simply cause the pulleys to turn. This winds up all or a portion of the extending part 15, of the rope, so that a powerful pull is made upon the maybe a heavy safe to be load 18, and this load is moved accordingly.

In the form of my device appearing in Figure 3. I have a base 19, and mounted securely upon this base is a stout frame 20 made of metal, preferably steel, and secured in position by bolts 21, 22. This frame is provided with bearings, one of which is shown at 23, and also with a pair of slideways, one of which is shown at 24.

Mounted on these slideways are a pair of that the shaft 28,

.similar to the being connected b a yoke 26. To this yoke a cable 27 or ot er tensile member is secured, so as to be readily connected with the load to be moved. 7

A shaft 28 extends through the two slides, and carries a number of grooved pulleys 29 grooved pulleys 13, 14, above described. Another shaft 30 is supported by the bearings mentioned, and carries a number of rooved pulleys 31, similar to the grooved pulleys 14 above described.

A rope 32 is secured at one of its ends to a fastening 33, and is wound back and forth upon the pulleys 29 and 31.

The opposite'end of this rope is similarly secured, to a fastening like the fastening 33, but not shown.

The apparatus shown in Figure 3diifers from that appearing in Figures 1 and 2 in because su ported in slides as described, is movable bo ily toward and from the shaft 30. A further difference in the apparatus is that the rope 32 does not extend out to the left according to Figure 3.

Each portion of thero e 32, located between the two sets of pul eys, simply becomes longer and shorter, but this does not cause the pulle s to turn continuously, although each puley can turn slightly in either of two directions, in order to equalize such strains as may 'be' developed from time to time.

Thus in order to pull a light load for a relatively long distance and at a relatively high velocity I use the apparatus shown in Figures 4 and' 5 t Figures '1 and 2; but for a heavier load to be moved a shorter distance and at a lower velocity I employ the form shown in Figure 3.

In the form of m .de'vice appearing in e various parts are mounted upon a base 34. There are two U- frames 35, 36, as may be understood from Figure 4. The U-frame 35is rovided with a pair of slides 37, 38, eac slide being I mounted in a slideway 39, as indicated in .the upper left hand portion of Figure 4. A yoke 40 is connected with the two slides 37 and 38, and carries an eye 40*. A cable 41 is connected with this e e and extends therefrom to the load, whic is not shown in this figure, but is of the geperal type of the load 18 above described and shown in Fi ures 1 and 2.

he slides 37 and 38 carry a shaft '42, and loosely mounted upon this shaft are a number of grooved pulleys 43. The frame 35 is provided with a pair of bearings 44 and supported by these hearings is a sha 45. This shaft does not rotate, and carries a number of vedpulleys 46, loose relatively to eac other.

e U-frame 36 carries a pair of slides I pulleys 43 an 46- to'the The frame 36 is provided with a pair of bearings 53, 54 and supported by these bearings is a shaft 55. Loosely mounted upon this shaft are a number of grooved opulleys 56.

A water tank appears at 57, and is here shown conventional y.

Mounted upon the frame 34 are a fpair of rope clamps 58, 59, used as hereina ter described.

A pair of wringer rolls 60 and 61, are mounted upon a bracket 62 supported by the base 34.

An endless rope is shown at 63, and extends through the rope clamps 58 and 59, and between the roller wringers 60 and 61, and also through the water tank 57. Otherwise, the rope 63 is like the ropes 15 and 32 described. It is wound back and forth around the grooved pulleys 43 and 46 and is also wound back and forth around the grooved pulleys 56 and 52.

The rope may be shifted by hand, so that a given portion of the rope can be transferred from the grooved pulleys 43 and 56 to the grooved pulleys 56 and 52, and vice versa.

' The operation of the construction shown in Figures 4 and 5 may bereadily understood from the foregoing description.

The various assembled, the cable 41 connected with the weight to be moved, and the rope clamps 58 and 59 being tightened, the device is ready for use. a I

All portions of rope extending from the groove beingwet, either by having passed through the water tank 57 or by water showered upon them in any convenient way, thesev portions parts having been properly A pulleys'43 to the groove pulleys 46 of the rope begin to swell and therefore to I cause the yoke 40 to pull upon the cable 41, and thus to dislodge or move the weight which is to be operated upon.

After the work is done, or at least finished to the extent thus far described, the wet portion of the re e is shifted om the ooved grooved pu eys 56 and 52. This may be done in any convenientway, the rope being moved by hand. For

' half of the rope is wet and dry and this purpose the rope clamps 58 and 59 are of course loosened in order to allow the rope to travel freely.

- As the rope passes between the wringer rollers 60, the water it contains is in great measure squeezed out. The portion of the rope containing the residue of the water is brought into such position as to occupy the grooved pulleys 56 and 52 and is thus fully exposed or spread out, as may be understood from the right hand portion of Fig ure 5.

This portion of the rope is now allowed to dry out and this can be done without interfering with the other portion of the rope, occupying the grooved pulleys 43 and 46.

By this arrangement, at any particular time approximately one-half of the entire length of the rope may be drying while the other half of the rope, having been previously wet as described, is doing the work of pulling the load. Thus alternately ealph t is means that it is alternately lengthened and shortened.

Referring broadly to the structure shown in Figures 4 and 5, the left-hand portion of the apparatus is the one in which the rope, by shortening, does its work; and the righthand portion serves the general-purpose of a drying rack.

The construction shown in Figure 6 is like that appearing in Figure 1, with the exception that instead of a rope I use a stout wire or cable G-i .of metal, the lengthening and shortening of this member being caused by varying its temperature and thus causing the wire or cable as a whole to lengthen and shorten. In other words, the action of the construction illustrated in Figure 6 is thermal and not capillary.

I do not limit myself to the precise mechanismshown, as variations may be made therein without departing from my invention, the scope of which is commensurate with my claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is as follows:

1. A motor comprising a pair of shafts, pulleys mounted thereupon and free to turn, slide mechanism supporting one of said shafts to enable it to move bodily in relation to the other, a-lengthy contractile rope member wound back and forth upon said pulleys and adapted to change in length when moistened and dried, means for mois- 'tening and drying said contractile rope member, and mechanism connected with said contractile rope member and coacting therewith for moving a load. I

2. In a motor the combination of a base, a U-frame mounted thereupon and provided with slideways, slides mounted in said slideways and movable relatively to said U- frame, a shaft carried by said slides, a plurality of pulleys carried by said shaft and revoluble independently. of each other, another shaft journaled upon said U-frame, a contractile member wound around said first mentioned pulleys and around said second mentioned pulleys, and means for connecting said slides with a load to be moved.

3. In a device of the character described the combination of a base, a plurality of U-frames mounted upon said base and provided with slideways, slides mounted in said slideways, revoluble shafts supported by said slides, grooved pulleys mounted upon said shafts, other shafts journaled directly upon said U-frames, a single rope connected with all of said pulleys and extend ing from one of said U-frames to another, means for moistening said rope, and mechanism controllable by said rope for moving a load.

4. A device of the character described, comprising a base, a pair of U-frames mounted upon said base, grooved pulleys supported by said U-frames, a rope engag ing said grooved pulleys, means for moistening a portion of said rope while another portion thereof is drying, means for drying said last mentioned portion, and means for utilizing the shortening of said rope as it absorbs moisture, for the purpose of moving a load or the like.

5. In a motor the combination of a pair of frames each provided with slideways, slides mounted in said slideways, shafts supported by said slides, other slidesjournaled directly upon said frames, rooved pulleys mounted upon all of said s afts and revoluble thereupon independently of each other, a single endless rope wound upon all of said grooved pulleys and adapted to lengthen and shorten as said rope is dried out or moistened.

Signed at New York, in the county of New York and State of New York, this 1st day of November, 1924.

oHARLEs DAUB. 

